Im not sure this is is right this is scientific notation (4.18x10^-4)(9x^-4) 4.18 x 9. 10^-4x10^-4 well we add the exponents =37.62 which gives us 10^8 37.62 is not in scientific notion so we moves the decimal to the left which gives us 3.762 we add 1 to the. the exponent which gives us 10^9 3.762 x10^9 is this right

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.